centos7上修改lv逻辑卷的大小
小虾米
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2020-04-10 13:30:31
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author：headsen chen
date： 2019-03-18 15:24:22
自动化修改分区的脚本
umount /home # 交互式执行shell命令 echo 'y' |lvremove /dev/mapper/centos-home lvextend -L +140G /dev/mapper/centos-root xfs_growfs /dev/mapper/centos-root lvcreate -L 1G -n home centos mkfs.xfs /dev/mapper/centos-home mount /dev/mapper/centos-home /home df -h
# 必须是lvs的硬盘分区模式，centos-home 是lv的名称，centos是vg的名称，
1，查看
[root@localhost mnt]# df -h Filesystem Size Used Avail Use% Mounted on /dev/mapper/cl-root 50G 12G 39G 23% / devtmpfs 1.9G 0 1.9G 0% /dev tmpfs 1.9G 0 1.9G 0% /dev/shm tmpfs 1.9G 8.6M 1.9G 1% /run tmpfs 1.9G 0 1.9G 0% /sys/fs/cgroup /dev/sda1 1014M 139M 876M 14% /boot /dev/mapper/cl-home 66G 33M 66G 1% /home tmpfs 378M 0 378M 0% /run/user/0
[root@localhost mnt]# lvs
LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert
home cl -wi-a----- 65.12g
root cl -wi-ao---- 50.00g
swap cl -wi-ao---- 3.88g
卸载/home 分区
[root@localhost mnt]# umount /home
删除home的lv分区
[root@localhost mnt]# lvremove /dev/mapper/cl-home Do you really want to remove active logical volume cl/home? [y/n]: y Logical volume "home" successfully removed
增加root所在的 / 分区并更新文件系统
[root@localhost mnt]# lvextend -L +60G /dev/mapper/cl-root Size of logical volume cl/root changed from 50.00 GiB (12800 extents) to 110.00 GiB (28160 extents). Logical volume cl/root successfully resized.
[root@localhost ~]# xfs_growfs /dev/mapper/cl-root
meta-data=/dev/mapper/cl-root isize=512 agcount=4, agsize=3276800 blks
= sectsz=512 attr=2, projid32bit=1
= crc=1 finobt=0 spinodes=0
data = bsize=4096 blocks=13107200, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0 ftype=1
log =internal bsize=4096 blocks=6400, version=2
= sectsz=512 sunit=0 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
data blocks changed from 13107200 to 28835840
创建/home分区，并设置大小为5G
[root@localhost mnt]# lvcreate -L 5G -n home cl Logical volume "home" created. [root@localhost mnt]# mkfs.xfs /dev/mapper/cl-home meta-data=/dev/mapper/cl-home isize=512 agcount=4, agsize=327680 blks = sectsz=512 attr=2, projid32bit=1 = crc=1 finobt=0, sparse=0 data = bsize=4096 blocks=1310720, imaxpct=25 = sunit=0 swidth=0 blks naming =version 2 bsize=4096 ascii-ci=0 ftype=1 log =internal log bsize=4096 blocks=2560, version=2 = sectsz=512 sunit=0 blks, lazy-count=1 realtime =none extsz=4096 blocks=0, rtextents=0
挂载并查看
[root@localhost mnt]# mount /dev/mapper/cl-home /home [root@localhost mnt]# df -h Filesystem Size Used Avail Use% Mounted on /dev/mapper/cl-root 110G 12G 99G 11% / devtmpfs 1.9G 0 1.9G 0% /dev tmpfs 1.9G 0 1.9G 0% /dev/shm tmpfs 1.9G 8.6M 1.9G 1% /run tmpfs 1.9G 0 1.9G 0% /sys/fs/cgroup /dev/sda1 1014M 139M 876M 14% /boot tmpfs 378M 0 378M 0% /run/user/0 /dev/mapper/cl-home 5.0G 33M 5.0G 1% /home
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